Need help choosing new smartphone

Hi everyone,
My Vodafone Smart Turbo 4 is becoming old and slow, so I was thinking it is time to buy something new. My budget is 200-300 euro. I did some research and so far I found these three phones, but according to youtube and reviews, with the following issues:

I know I ask a lot for phones in this price range, but does anyone know of a phone that has a 5.2" (5.5 prefered) screen, android 6, decent audio (I use my phone as an mp3 player), decent camera, and fast enough that there is no lag opening apps/etc.? Thanks in advance!!

Why not consider a used Samsung S6 64gb? Great camera, good audio and lightning fast. 64 gb of internal memory avoids messing with apps not running on sd card because internal memory is full. You may find a 128gb one

Why not consider a used Samsung S6 64gb? Great camera, good audio and lightning fast. 64 gb of internal memory avoids messing with apps not running on sd card because internal memory is full. You may find a 128gb one

Thanks for replying. The S6 is a very nice phone, but way out of my budget. The 32GB costs around 400 and the 64GB costs 500-600. My budget is 300 euro max.